Evaluate
-68
Factor
-68
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-3\times 6-2\left(-9+4\right)^{2}
Subtract 2 from 8 to get 6.
-18-2\left(-9+4\right)^{2}
Multiply -3 and 6 to get -18.
-18-2\left(-5\right)^{2}
Add -9 and 4 to get -5.
-18-2\times 25
Calculate -5 to the power of 2 and get 25.
-18-50
Multiply 2 and 25 to get 50.
-68
Subtract 50 from -18 to get -68.
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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